<template>
    <div class="tab-control">
        <div class="tab-control-item" v-for="(item,id) in titles" :key="id" 
        :class="{active: id === currentIndex}"
        @click="itemClick(id)">
            <span>{{item}}</span>
        </div>
    </div>
</template>

<script>
export default {
    name: "TabControl",
    props: {
        titles:{
            //设置类型为数组
            type: Array,
            //如果类型是数组或者对象的额时候，默认都必须是函数
            default() {
                return[]
            }
        }
    },
    data() {
      return{
          currentIndex: 0
      }  
    },
    methods: {
        itemClick(id){
            //改变点击事件的currentIndex
            this.currentIndex = id;
            this.$emit('tabClick', id);
        }
    }
}
</script>

<style scoped>
  .tab-control {
    display: flex;
    text-align: center;
    font-size: 15px;
    height: 40px;
    line-height: 40px;
    background-color: #fff;
  }

  .tab-control-item {
    flex: 1;
  }

  .tab-control-item span {
    padding: 5px;
  }

  .active {
    color: var(--color-high-text);
  }

  .active span {
    border-bottom: 3px solid var(--color-tint);
  }

</style>